Reddit mentions of Hefty Trash Compactor Bags 18 GAL - 5 CT

These were common and cheap pack liners.

These are the ones I've been buying. And I believe they're the same ones that Mike Clelland draws a picture of in his book (whatever that's worth).

Pretty heavy at about 2.7oz each (on my scale), but VERY durable. I use one bag for many trips and many training hikes.

https://www.amazon.com/Hefty-Trash-Compactor-Bags-GAL/dp/B002BXRGQA

Yeah, it's a technique popularized by the /r/Ultralight crowd.

You can get 5 for $6 on Amazon. https://www.amazon.com/Hefty-Trash-Compactor-Bags-GAL/dp/B002BXRGQA

Pack covers do protect the fabric of your pack. However most modern backpacks are made of nylon materials that shed water and don't really retain water weight. If you've got a bunch of stuff strapped to the outside of your pack - the cover may still be necessary (although that's one reason we typically recommend not strapping sensitive gear to the outside of your bag).

Pack covers tend to flap in the wind. They make it a pain to get into your gear without getting everything wet.

A liner also helps eliminate extra dry bags. I used to have a dry bag for clothes, jackets, sleeping bag, etc. Now I just jam everything into my single pack liner and roll it up tight. Even more weight/space/cost savings there.

This helps with the 'pebble' problem. When you have many dry bags and other hard items in your pack, they take up extra space. Think of pebbles in a glass (pebbles = gear, glass = pack). There is air / unused space between the rocks. However if you take the gear out of those smaller / multiple dry sacks - and jam them all together - you use the space inside your pack more effectively.

Appears Amazon.ca has them: https://www.amazon.ca/dp/B002BXRGQA/ref=cm_sw_r_cp_awdb_qkGKzb2M3TT36

Totally out of the loop on conversion rates, but I suspect this isn't exactly a bargain.

That's just a normal trash bag. Just about every store sells them.

To my understanding trash compactor bags are made to be more durable than ordinary trash bags, which is the reason they are so popular in the American UL culture. People have used them for multi-month thru-hikes, whereas ordinary trash bags might get shredded after few uses.

[Badger Balm] (https://www.amazon.ca/Badger-Balms-Foot-Balm-Grams/dp/B006H9KCRE)

Trash Compactor Bags

This would make a good entry into the wiki for this sub!

~18 gal is the common dry sack.

Edit: Oh, Food sack. ~15lt is more than plenty. Probably a little smaller.

Use a pack liner for carrying worry free in the rain. This can be a regular old garbage bag or a thicker trash compactor bag or a fancy lightweight nylofume bag. This works much better for waterproofing your stuff and you don't have to get a heavy, less comfortable waterproof pack.

If you are sticking to your requirement for a transparent pack, go with the transparent litesmith pack liner linked to above. However unless you fly constantly I highly recommend you reconsider this as you are severely limiting your backpack experience.

Given your weights, it seems there would at least be a difference in material thickness. I have the American 'Hefty' ones which are approx 68L and weigh 65g.

I'm in Germany currently and we also don't have them here usually, but I bought some through Amazon.

I personally couldn't find any bags thick enough for me. Perhaps you could try looking in a builders merchants, I'm sure they'd have something heavy duty enough.

Thanks for the deets, found these Hefty ones which seem similar (2.5 mil thick) so may be a bit heavier but could be tougher.

https://www.amazon.ca/Hefty-E2-1218-Count-Trash-Compactor/dp/B002BXRGQA/ref=sr_1_2?s=hpc&ie=UTF8&qid=1510093702&sr=1-2&keywords=compactor+bags